1. One who blockades 
2. A vessel employed in blockading

Derived forms: blockaders

• rubicund
• rubicundity
• rubidium
• rubidium-strontium dating
• rubify
• rubiginous
• Rubin test
• Rubinstein
• ruble
• rubor
• rubric
• rubrical
• rubricate
• Rubus
• Rubus australis
• Rubus caesius
• Rubus canadensis
• Rubus chamaemorus
• Rubus cissoides
• Rubus cuneifolius
• Rubus flagellaris
• Rubus fruticosus
• Rubus hispidus
• Rubus idaeus
• Rubus idaeus strigosus